class RemoveBlockForm

class RemoveBlockForm extends LayoutRebuildConfirmFormBase {
    
    /**
     * The current region.
     *
     * @var string
     */
    protected $region;
    
    /**
     * The UUID of the block being removed.
     *
     * @var string
     */
    protected $uuid;
    
    /**
     * {@inheritdoc}
     */
    public function getQuestion() {
        $label = $this->sectionStorage
            ->getSection($this->delta)
            ->getComponent($this->uuid)
            ->getPlugin()
            ->label();
        return $this->t('Are you sure you want to remove the %label block?', [
            '%label' => $label,
        ]);
    }
    
    /**
     * {@inheritdoc}
     */
    public function getConfirmText() {
        return $this->t('Remove');
    }
    
    /**
     * {@inheritdoc}
     */
    public function getFormId() {
        return 'layout_builder_remove_block';
    }
    
    /**
     * {@inheritdoc}
     */
    public function buildForm(array $form, FormStateInterface $form_state, SectionStorageInterface $section_storage = NULL, $delta = NULL, $region = NULL, $uuid = NULL) {
        $this->region = $region;
        $this->uuid = $uuid;
        return parent::buildForm($form, $form_state, $section_storage, $delta);
    }
    
    /**
     * {@inheritdoc}
     */
    protected function handleSectionStorage(SectionStorageInterface $section_storage, FormStateInterface $form_state) {
        $section_storage->getSection($this->delta)
            ->removeComponent($this->uuid);
    }

}